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Which two conditions are necessary for rusting of iron?

Answer and explanation

Correct answer: Oxygen and water (moisture)

Rusting is a slow oxidation reaction in which iron reacts with oxygen in the presence of water or moisture to form hydrated iron(III) oxide, commonly called rust. Both oxygen and moisture are essential conditions. Salt or acids may speed up corrosion by increasing conductivity, but they are not substitutes for oxygen and water. Nitrogen, light, hydrogen, and sound are not the required pair. Thus option A is correct.

Related tags

ScienceClass10RustingCorrosionOxidationIronChemical Reactions And EquationsChemical Substances – Nature And Behaviour

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